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Schedule I - Condensed Financial Information of Parent (Dividends from Subsidiaries and Affiliates) (Details) - USD ($)
$ in Millions
6 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2024
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Condensed Cash Flow Statements, Captions [Line Items]          
Proceeds from Divestiture of Businesses and Interests in Affiliates $ 11 $ 11 $ 423 $ 254 $ 1
SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries     1,600 1,400 832
Parent Company [Member]          
Condensed Cash Flow Statements, Captions [Line Items]          
Proceeds from Divestiture of Businesses and Interests in Affiliates     $ 574 $ 474 $ 157